Home / 79,198.08-109,163.20-63,254.40

Finding the Fourth Proportional to 79,198.08, 109,163.20 and 63,254.40

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Solution

The fourth proportional to 79,198.08, 109,163.20 and 63,254.40 is: 87,187.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,198.08 : 109,163.20 = 63,254.40 : x
  2. Step 2: Convert to fraction form
    79,198.08/109,163.20 = 63,254.40/x
  3. Step 3: Cross multiply
    79,198.08x = 109,163.20 × 63,254.40
  4. Step 4: Simplify right side
    79,198.08x = 6,905,052,718.08
  5. Step 5: Solve for x
    x = 6,905,052,718.08/79,198.08
  6. Step 6: Final answer
    x = 87,187.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.